Mapping the distribution, trends, and drivers of soil organic carbon in China from 1982 to 2019
文献类型：期刊论文
| 作者 | Yang, Ren-Min1; Huang, Lai-Ming2; Zhang, Xin3; Zhu, Chang-Ming4; Xu, Lu4 |
| 刊名 | GEODERMA
 |
| 出版日期 | 2023 |
| 卷号 | 429页码:11 |
| ISSN号 | 0016-7061 |
| 关键词 | Spatiotemporal variation Soil carbon Digital soil mapping Drivers National scale |
| DOI | 10.1016/j.geoderma.2022.116232 |
| 通讯作者 | Zhu, Chang-Ming(zhuchangming@jsnu.edu.cn) |
| 英文摘要 | The evaluation of soil organic carbon (SOC) dynamics and its driving factors is important for developing sus-tainable soil C sequestration practices. A key challenge is the lack of a time series of spatially explicit SOC es-timates; most previous SOC estimates are static. In this study, we applied a digital soil mapping framework to model the relationship between SOC and environmental factors based on a combined dataset of 4695 soil samples collected in China from the early 1980 s and during the 2000-2014 period. We predicted the annual SOC distribution at a depth of 0-100 cm at a 1 km resolution for China between 1982 and 2019. We mapped trends of SOC change and identified change hotspots. To obtain the pixel-level association between SOC change and environmental factors, we used a linear function to quantify the contribution of individual predictors to SOC change. The results show that the accuracy of SOC prediction is acceptable, with a mean R2 value of 0.58 for validation. SOC storage in China was estimated to range from 89.03 to 97.41 Pg C and showed a slight increase (slope = 0.024 Pg C/yr) from 1982 to 2019. Specifically, two distinct phases of SOC were identified as follows: (1) from 1982 to 2004, a considerable decline occurred, which was mainly driven by increased temperature; (2) from 2004 to 2019, SOC increased slowly, resulting from the contribution of greening to sustaining C seques-tration in soils under warming conditions. Approximately 17 % of all areas have been characterized by a sig-nificant decrease in SOC since 1982, predominantly in central and western China. Environmental controls exhibited large spatial variation, where approximately 69 % of all areas were predominantly controlled by climate factors. For grasslands, the SOC losses in northern China were largely driven by temperature and pre-cipitation, while the SOC losses were primarily attributed to decreased organic inputs driven by grassland degradation on the Tibetan Plateau. Policy-driven land use change has led to an increase in SOC in some cropland areas (e.g., northeast and east China). The implementation of ecological restoration has shown a positive in-fluence on SOC sequestration. This study highlights the diverse spatial patterns and heterogeneity of SOC changes and their controls. Given this spatial differentiation, spatially explicit assessments of soil C dynamics are important for the formulation of regional soil-based mitigation strategies and guidance for effective restoration interventions based on geographic location. |
| WOS关键词 | CLIMATE-CHANGE ; SEQUESTRATION ; STOCKS ; STORAGE ; UNCERTAINTY ; PATTERNS ; MATTER ; DEPTH ; WALES ; MAP |
| 资助项目 | National Key Research and Development Program of China[2021YFB1407004] ; National Natural Science Foundation of China[42171054] |
| WOS研究方向 | Agriculture |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000882464500003 |
| 资助机构 | National Key Research and Development Program of China ; National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/187229]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Zhu, Chang-Ming |
| 作者单位 | 1.Tianjin Univ, Sch Earth Syst Sci, Tianjin 300072, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 3.Chinese Acad Sci, Inst Remote Sensing & Digital Earth, State Key Lab Remote Sensing Sci, Beijing 100101, Peoples R China 4.Jiangsu Normal Univ, Sch Geog Geomat & Planning, Xuzhou 221116, Jiangsu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Ren-Min,Huang, Lai-Ming,Zhang, Xin,et al. Mapping the distribution, trends, and drivers of soil organic carbon in China from 1982 to 2019[J]. GEODERMA,2023,429:11. |
| APA | Yang, Ren-Min,Huang, Lai-Ming,Zhang, Xin,Zhu, Chang-Ming,&Xu, Lu.(2023).Mapping the distribution, trends, and drivers of soil organic carbon in China from 1982 to 2019.GEODERMA,429,11. |
| MLA | Yang, Ren-Min,et al."Mapping the distribution, trends, and drivers of soil organic carbon in China from 1982 to 2019".GEODERMA 429(2023):11. |
入库方式： OAI收割
来源：地理科学与资源研究所
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